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| Patents for Fredrick Curtis | |||||
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| Number | Date | Patentee | Title | Type | |
| 93,026 | Jul. 27, 1869 | A.E. Whitmore | Sliding Calipers | measurement gauges | |
| 101,689 | Apr. 05, 1870 | A.E. Whitmore | Sliding Calipers | measurement gauges | |
| 105,153 | Jul. 05, 1870 | A.E. Whitmore | Calipers | measurement gauges | |